ul>li>a:hover{
    background-color: rgb(163, 162, 163);
}
ul>li>a{
    font-size:1.2em;
    font-weight:900;
    margin: 0 15px;
    border-radius: 10px;
    font-family: "Microsoft Yahei";
}
main{
    position: relative;
}
#container {
    border-radius: 5px;
    padding: 35px 10px;
    position: absolute;
    top: 100px;
    right:30px;
    display:none;
    background-color: rgb(248, 245, 245);
}
#mountNode{
    position: relative;
}
#item{
    border-radius: 5px;
    position: absolute;
    top: 100px;
    right:30px;
    display:none;
    /* opacity: 0.7; */
    background-color:#8a8c8e;
    padding: 20px;
    font-size: 1rem;
    word-wrap: break-word;
}
#items{
    border-radius: 5px;
    position: absolute;
    top: 100px;
    right:30px;
    display:none;
    /* opacity: 1; */
    background-color:#8a8c8e;
    padding: 20px;
    text-align:justify;
    font-size: 0.8rem;
    word-wrap: break-word;
}
#number{
    font-size: 35px;
}
#txt{
    word-wrap: break-word;
}
#grade{
    font-size: 50px;
    font-weight: 3px;
    text-align: center;
}
#text{  
    display:none;
}
/* #start{
    display:none;
} */
#start>img{
    margin-top: 30px;
    width: 95%;
    height:auto;
    position:absolute;
    top: -5px;
    left: 0;
}